Russian election officials have issued a final decision to block opposition candidate Lyubov Sobol from running for Moscow’s city council next month.

Russia’s Central Election Commission (CEC) said it had received 19 appeals from various candidates including Sobol against the Moscow commission’s decision to disqualify them from the ballot on Sept. 8. That decision, based on claims that the candidates had failed to collect enough genuine signatures to register, has led supporters of Sobol and other opposition candidates to stage weekly rallies over the past month.